/**
 * Copyright 2016 vip.com.
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 * </p>
 **/

package spring.cloud.tasks.api.utils;

import org.springframework.beans.BeanWrapper;
import org.springframework.beans.BeanWrapperImpl;

import java.beans.PropertyDescriptor;
import java.util.HashSet;
import java.util.Set;

/**
 * @author hebelala
 */
public class BeanUtils {

    public static void copyProperties(Object source, Object target) {
        org.springframework.beans.BeanUtils.copyProperties(source, target);
    }

    public static void copyPropertiesIgnoreNull(Object source, Object target) {
        final BeanWrapper beanWrapper = new BeanWrapperImpl(source);
        PropertyDescriptor[] pds = beanWrapper.getPropertyDescriptors();
        Set<String> names = new HashSet<>();
        for (PropertyDescriptor pd : pds) {
            Object value = beanWrapper.getPropertyValue(pd.getName());
            if (value == null) {
                names.add(pd.getName());
            }
        }
        org.springframework.beans.BeanUtils.copyProperties(source, target, names.toArray(new String[names.size()]));
    }

}
